In Chinese, different characters or 字，can sound the same but with different meaning altogether. So Jing can have 3 different sounds depending on the tone. It can be jīng，jǐng and jìng，but never jíng because no such Chinese character exist. It is pronounced as dz(j)ee-ng depending on the tone. It can be of any character, such as 静（silence), 京（the capital), 净（clean）, 晶（crystal) etc. For me my given name is 璟，which means the luster of jade.